Not applying to all 5 universities at once, can the application be modified

So if I apply to Oxford by 15th October and then 4 more universities before 15th Jan, does the same application that I sent to Oxford have to go to the other 4 universities or can I change it? Specifically, can the personal statement be changed, and the predicted grades?

If you add choices to ucas track then your application will be sent to them as it was originally submitted. You can’t amend your ps or reference after sending it to ucas.

So if I apply to Oxford by 15th October and then 4 more universities before 15th Jan, does the same application that I sent to Oxford have to go to the other 4 universities or can I change it? Specifically, can the personal statement be changed, and the predicted grades?

The only uni I know of that has the facility to send a substitute personal statement is Durham

https://www.durham.ac.uk/study/undergraduate/how-to-apply/writing-a-personal-statement/

If you add choices to ucas track then your application will be sent to them as it was originally submitted. You can’t amend your ps or reference after sending it to ucas.

Ohh I did not know that, thank you! I’m applying to related courses though (physics, physics with astrophysics, astrophysics) and the website explicitly states that a substitute ps can be submitted “if the Durham course you’re applying to is very different to the one in your UCAS personal statement. For example, if you applied to four Chemistry courses but you also applied to our Natural Sciences course (even including Chemistry, but with other subjects too), or perhaps you have applied to Medicine at four other universities but chose Anthropology as your fifth choice with us.”

Btw can the PS or predicted grades be changed during ucas extra or ucas adjustment?

No

You cannot amend your PS or reference after sending your application to UCAS